Sealing mechanism for metal windows



Nov. 18, 1930. H. E. CAMPBELL SEALING MECHANISM FOR METAL WINDOWS Filed Aug. 3, 1929 Patented Nov. 18, 1930 UNITED STATES PATENT; Tori-ice HARRY "E. CAMPBELL, OF BALTIMORE, MARYLAND, ASSIG NOB '10 CAMPBELL METAL WINDOW CORPORATION, 01! LAND SEALING MECHANISII FOB METAL WINDOWS BALTIMORE, MARYLAND, A CORPORATION O! my- Application and August a, was Serial in. 888,190.

In my earlier Patent No. 1,673,393, issued June 12, 1928, I describe a sealing mechw nism for use with windows having openings through the inner walls of the jambs, and

having separate enlarged chambers back of such openings with sashes having plates adapted to extendthrough such openings.

In that patent the sealing mechanism is arranged to provide a seal inside the jamb between the sash plate and a parting strip or baflie which forms a part of the inner jamb wall, and at the same time it is so arranged that the sash is free to move in both horizontal directions without being held by spring 5 pressure. According to the present invention, a somewhat similar structure 1s used, but means is provided so that the sashes are drawn by a relatively light sprlng pressure toward the bafile. This increases the tightness of the joint and prevents any tendency of the sash to rattle. It may be noted that due to the fact that the sash is drawn toward the bafile instead of being pushed to- 5 ward it, the friction is limited to contact between the sash and the baflie, and as the spring pressure holding the sash in this direction is very light, this friction is not great enough to create any difficulty. In some instances where certain metals are used for the manufacture of the window, such for example, as aluminum, the friction can be reduced by interposing a difierent metal between the sash and the baflie.

This invention can readily be understood by reference to the accompanying drawings. In these drawings Fig. 1 is a sectional v1ew through a portion of the j amb, showing both sashes in section; Fig. 2 is a view similar to Fig. 1 showing a slight modification, and Fig.

3 is a sectional view on line 3-3 of Fig. 1.

In the form of device shown in Fig. 1 the jamb is represented as having an inner wall made up of the portions 10 and 12 with a bafile 5 plate 14 between them to form the balance of the 1nner amb wall. The baffle plate 14 has legs 16 extending back to the partition 18 which is here shown as integral with the portion 10 of the inner jamb wall. The sashes are indicated at 20 and 22.

The weather seal comprises a member 24 of thin metal such as zinc or spring bronze which passes between the leg 16 of the baflle and partition 18, and then runs in on both sides to contact with the rear side of the baflie adjacent the sashes. At each end the member 28, but that members 28 shall move vertically with the sash. To this end, a slot 30 is formed in each sash as illustrated in connection with sash 22 in Fig. 3. A cotter pin 32 passes through both sides of member 28 and through the slot 30, which permits member 28 to have horizontal movement relative to the sash with which it is associated, buth causes it to move vertically with such sas By this arrangement a close seal is obtained between the sash and the bafiie (which is the polnt of primary importance) and the sash is drawn toward the baffle by the tension between members 24 and 28. However, as there is a substantial distance between the point where member 24 is anchored (that is behind the legs 16 of the battle) and its point of connection with the movable sash parts, this tension will be light and flexible so that there will be substantially no tendency for the sash to bind.

In Fig. 2, I show a modification of the member which embraces the sash plates, the other parts being exactly the same as shown in Fig. 1. Here such member is designated by the numeral 34. It will be noted that each member 34 extends in slightly beyond v the inner wall of the jamb and then is bent back on each side so that the cut edges are within the j amb. The cut edge adjacent the baiile is then again bent toward the bafiie to form a hook 36 which will interlock with the hook 26 of member 24. With this construction, any friction between the sash and the j amb involves contact between one of the members forming the inner jamb wall and a portion of member 34. Member 34 can be made of any selected type of metal to reduce this friction. Ordinarily this is not important but it becomes important in some instances as where the window is made largely of aluminum.

What I claim is:

1. In a window of the type having jambs, openings through the inner walls of the ambs, a parting strip forming part of the inner jamb wall between such openings, separate enlarged chambers back of such openings and sashes having plates adapted to extend through such openings, members movable vertically with the sash plates and held substantially in contact with such plates in such a way as to permit relative transverse movement between the two, and members attached in the jamb adapted to contact with the rear wall of the parting strip and having a portion extending back into the jamb substantially parallel with the sash plates and adapted to engage such movable sash members to make a seal between the sashes and the parting strip and also to draw the sashes towards the parting strip.

2. A structure as specified in claim 1, in which the members held in the jamb extend forward between the sash plates and the parting strip to form a rubbing surface for the sash lates.

3. n a window of the type having jambs, openings through the inner walls of the jambs, a parting strip forming part of the inner jamb wall between said openings, separate enlarged chambers back of said openings, and sashes having plates adapted to extend through said openings, said plates and said inner jamb walls being formed of similar metal members fitting over the edges of the sash plates formed of a different metal from the jamb Walls and extending inwardly beyond the jamb walls, means whereby such members are carried by the sash plates during vertical movement but are permitted to move horizontally relative to the sash plates, and means for making a seal between such members and jamb members adjacent said openings.

HARRY E. CAMPBELL. 

